Pressure-generator.



No. 653,!26. Patented July 3, moo.

- I. m. UPPERBU.

PRESSURE GENERATOR.

(LpplicI-fion filed Feb. 12, 1900.)

(No Modal.)

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SPECIFICATION forming part of Letters Patent No. 653,126, dated July 3,1 900.

Application filed February 12, 1900. $eria1N0. 4,860. (No model.)

To all whom it may concern.-

Be it known that I, INGLIS M. UPPEROU, a citizen of the United States,residing in the city of Newark, in Essex county and State of New Jersey,have invented certain new and useful Improvements in PressureGenerators,of which the following is a specification suflicient to enable othersskilled in the art to which the invention appertains to make and use thesame.

My invention relates to means for quickly attaining a relatively-highdegree of pressure in the generation of steam or other gaseous mediumfor the transmission of power orheat.

Myinvention consists, primarily, in a pressure-generator tube having aninternal hollow vacuum tube or core which creates an annular spaceimmediately adjoining the inner surface of the generatontube, so that ahigh degree of heat may be imparted to the liquid or vapor in acomparatively-short time, the vacuum in the central tube or corerendering the same collapsible in case of excess of pressure and alsorendering the interior thereof non-conducting to heat, so that the heatthat would otherwise pass through it is deflected into the liquid or gasin the said annular space, and, secondarily, in the special arrangementof parts ereinafter set forth.

In the accompanying drawings, Figure 1 is a vertical section of theessential parts of apparatus embodying my invention. Fig. 2 is a sectionupon plane of line 2 2, Fig. 1.

A represents a casing or furnace the walls, 650., of which are packedwith asbestos a or other non-conducting material. At the bottom of thisfurnace is situated means for supplying a high degree of heat to thechamber C, formed by the Walls or casing A. By way of illustration Ihave in the drawings indicated a series of burners B B, although anyother suitable form of heating device may be substituted therefor withlike result, and I do not limit myself in this respect.

G G represents a series of generator-tubes. One or more of thesepressure-generating tubes may be employed, according to the requirementsof the special use to which the device is to be applied. Where only oneis used, the inlet or supply pipe enters at or near one extremity, whilethe discharge-pipe is connected at or near the other extremity. Where aplurality of pressure-generating tubes G G are used, they are coupledtogether successively by conduits d d. Thus in the drawings sevengenerator-tubes are shown as arranged in the heating-chamber O, thelower ones on either side being connected with inlet-pipes I I and byconduits d d with the gencrating-tubes next above, which are in turnconnected by conduits d d with the upper generatin g-tubes, both ofwhich are connected by conduits d d with a central tube, with which thepressure or discharge pipe P communicates.

Each generator-tube G is provided with a sealed hollow core H ofslightly-less diameter than the internal diameter of the generatortube,and is supported therein in such manner as to create thereon an annularspace 8 for the passage of the liquid or gaseous medium to be employed.By thus restricting the area of the generator-tube I force the fluid orgas into immediate contact with its inner surface, which is highlyheated by reason of the direct exposure of its outer surface to theintense heat in the chamber 0. By this means the generation of a highdegree of pressure may be effected almost instantaneously and maintainedindefinitely.

The hollow cores II are sealed in any appropriate manner, as by theheads h h shown at each end in the drawings or by any other mechanicalexpedient. The air is exhausted from them, so as to create a partialvacuum therein for the double purpose of rendering the interiornon-conductive to heat and of rendering them collapsible in case ofexcessive pressure, thereby relieving the strain upon the generator-tubeand preventing its rupture. For the same reason the core-tube H is mademuch thinner and weaker than the generator-tube. G. By rendering theinterior of the core non-conductive I deflect the heat that wouldotherwise pass through it and direct it into the annular spaces 5.

The ends of the generator-tubes G G are closed by screw-caps g g orequivalent means, so that one or both ends can be readily opened and thecore removed for the purpose of facilitating the cleaning of theinternal surface of the one and the external surface of the other.

It will be seen that the device is simple in construction, thoughstrong, accessible for cleaning, 850., and non-explosive, and that byits use a comparatively-small quantity of fluid or gas may be exposeddirectly to a relativelylarge heating-surface.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a pressure-generator of the class designated, the combination of aseries of generating-tubes connected successively one with the other bysuitable conduits, each generating-tube having a sealed hollow vacuumtube or core located therein, an inlet-pipe connected with the firstgenerating-tube of the series and an outlet-pipe connected with the lastgenerating-tube of the series, and' means for heating said series ofgeneratortubes externally for the purpose set forth.

2. In a pressure-generatorof the class designated, the combination of ageneratingtube having an inlet-pipe and an outlet-pipe, a vacuum-tube insaid generating-tube forming a core, and means for heating the exteriorof said generating-tube, for the purpose set forth.

INGLIS M. UPPERCU.

Witnesses: D. W. GARDNER,

GEO. WM. MIATT.

